Acoustic composite windows


Soundproofing is a key factor when specifying high performance, cost effective and compliant glazing in urban developments.

We’re seeing an increasing demand for acoustic attenuation as standard on many commercial large-scale residential developments in built-up areas or on flight paths.

When specifying composite glazing solutions for residential and commercial developments in urban areas, consideration should be given to the acoustic control across the whole window unit, not just the glass.

Find out why, and the key benefits of specifying acoustic composite windows…

Acoustic composite windows
composite windows for commercial residential development

Why specify acoustic composite windows in residential developments?

  • To improve the quality of life for the building’s occupants. Noise pollution can have a negative impact on our health and wellbeing. It can cause stress, anxiety, and sleep problems. Acoustic windows can help to reduce noise levels, creating a more peaceful and relaxing environment.
  • To increase the value of the building. Buyers are willing to be attracted to homes that are quiet and peaceful.
  • To comply with building regulations – these require that new construction meet certain noise reduction standards. Acoustic windows can help to ensure that a building meets these standards.
  • To improve the energy efficiency of the building. Acoustic windows can help to keep out unwanted noise, which can help to improve the energy efficiency of the building. This can save the building’s owners money on their energy bills.
  • To protect the building’s occupants from outside noise source, such as busy roads, schools, flight paths, construction and other sources.

How is soundproofing measured?

The standard unit for measuring sound pressure levels is the decibel, abbreviated to dB where 0dB is the lower threshold of normal hearing and 130dB is the upper threshold of pain. A change of 3dB is only just perceptible whereas 5dB would be clearly noticeable and an increase of 10dB is roughly equivalent to a doubling of loudness.

The sound proofing characteristics of building components is measured in dB(Rw) values.

Known as the weighted sound reduction index, it is a laboratory-measured rating used to describe the ability of a window or door to provide sound insulation across a wide frequency range – the higher the number, the better the performance.

To take into account low frequency noise such as road and rail traffic, a correction factor (Ctr) has been introduced to the Rw scale and this is expressed as dB(Rw+Ctr).

How do soundproof acoustic composite windows work?

Soundproof glazing works by deflecting and dissipating sound waves. This is achieved with thick laminated glass and internal bonding between the inner and outer layers of glazing.

A PVB (Polyvinyl Butyral) interlayer is sandwiched between glass panes to absorb sound and help keep noise out of the building. The thickness of these sandwiching panes as well as the configuration of other glass panes and cavity spacing within double or triple glazing can dramatically effect the sound performance of the overall glass unit.

Can sound performance of a window be determined by the glass alone?

No. The choice of window frame will affect the overall insulating performance of the entire window. Poor quality frames can allow sound to penetrate. A real physical test of the window frame and glass together is the only true way of achieving trusted performance data.

Triple-glazed corner composite window
reversible composite window

What are the benefits of Westcoast acoustic composite windows?

Westcoast Windows offer 3rd Party independently tested standard entry level composite windows and doors with superior sound reduction of 34 dB(Rw) and 29 dB (Rw+Ctr) and can provide a huge selection of tested combinations of composite aluminium timber opening windows, fixed lights and doors up to 48 dB(Rw).

Find out more about Westcoast Swedish soundproof acoustic composite windows at MADE IN SWEDEN. Take a look at our full product range: COMPOSITE WINDOWS & DOORS

Contact our UK-based team to discuss your project and specification for soundproof acoustic composite windows: or call 01359 241944.

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